1/* 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 */ 26 27#ifndef DOMTimer_h 28#define DOMTimer_h 29 30#include "ActiveDOMObject.h" 31#include "Timer.h" 32#include <wtf/OwnPtr.h> 33 34namespace WebCore { 35 36 class InspectorTimelineAgent; 37 class ScheduledAction; 38 39 class DOMTimer : public TimerBase, public ActiveDOMObject { 40 public: 41 virtual ~DOMTimer(); 42 // Creates a new timer owned by specified ScriptExecutionContext, starts it 43 // and returns its Id. 44 static int install(ScriptExecutionContext*, ScheduledAction*, int timeout, bool singleShot); 45 static void removeById(ScriptExecutionContext*, int timeoutId); 46 47 // ActiveDOMObject 48 virtual bool hasPendingActivity() const; 49 virtual void contextDestroyed(); 50 virtual void stop(); 51 virtual bool canSuspend() const; 52 virtual void suspend(); 53 virtual void resume(); 54 55 // The lowest allowable timer setting (in seconds, 0.001 == 1 ms). 56 // Default is 10ms. 57 // Chromium uses a non-default timeout. 58 static double minTimerInterval() { return s_minTimerInterval; } 59 static void setMinTimerInterval(double value) { s_minTimerInterval = value; } 60 61 private: 62 DOMTimer(ScriptExecutionContext*, ScheduledAction*, int timeout, bool singleShot); 63 virtual void fired(); 64 65 int m_timeoutId; 66 int m_nestingLevel; 67 OwnPtr<ScheduledAction> m_action; 68 double m_nextFireInterval; 69 double m_repeatInterval; 70#if !ASSERT_DISABLED 71 bool m_suspended; 72#endif 73 static double s_minTimerInterval; 74 }; 75 76} // namespace WebCore 77 78#endif // DOMTimer_h 79 80